x+2x/7=9 - solution

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Solution for x+2x/7=9 equation:

x in (-oo:+oo)

x+(2*x)/7 = 9 // - 9

x+(2*x)/7-9 = 0

9/7*x-9 = 0 // + 9

9/7*x = 9 // : 9/7

x = 9/9/7

x = 7

x = 7

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